PURITAN-BENNETT 840 VENTILATORY SYSTEM WITH BILEVEL OPTION
Applicant
Puritan Bennett Corp.
Product Code
CBK · Anesthesiology
Decision Date
Dec 28, 1998
Decision
ST
Submission Type
Special
Regulation
21 CFR 868.5895
Device Class
Class 2
Attributes
Therapeutic, Pediatric
Indications for Use
The device is intended to provide continuous ventilation to patient's requiring respiratory support. This device is intended for a wide range of patients from infant to adult and for a wide variety of clinical conditions. The intended patient population includes infant, pediatric, and adult patients (tidal volume 25 - 2500 mL) who require continuous respiratory support. Intended for patient who require either invasive or non-invasive ventilation. The device is intended for use in hospitals and hospital type facilities which provide respiratory care for patients requiring respiratory support. The device may be used for transport within a hospital and hospital type facility provided compressed gas is supplied. The device is not to be used in the presence of flammable anesthetics. The device is intended for sale by or on the order of a physician only. This device is intended for operation by trained and qualified clinicians only and is intended for servicing by trained and qualified persons only.
Device Story
840 Ventilator System is a dual-microprocessor controlled critical care ventilator; provides continuous invasive or non-invasive ventilation. Inputs include preset PEEP, trigger sensitivity, and oxygen concentration; system utilizes two proportional solenoid valves and an active expiratory valve for gas delivery. Modification adds BiLevel ventilation mode and Inspiratory Pause feature. Used in hospitals/hospital-type facilities; operated by trained clinicians. Output consists of mandatory or spontaneous breaths; BiLevel mode provides pressure-controlled mandatory breaths. Clinicians use touch screen interface to select modes and activate features. Device supports patient respiratory function; benefits include flexible ventilation strategies for diverse patient populations.
Clinical Evidence
No clinical data provided. Substantial equivalence is based on design control procedures, software verification and validation testing, and comparison to predicate devices.
Technological Characteristics
Dual-microprocessor controlled; gas delivery via two proportional solenoid valves and active expiratory valve. Class I Type B equipment per IEC 601-1. Features include BiLevel ventilation and Inspiratory Pause implemented via software updates to existing user interface. Connectivity includes touch screen interface. Operates on compressed gas.
Indications for Use
Indicated for infant, pediatric, and adult patients (tidal volume 25-2500 mL) requiring continuous invasive or non-invasive respiratory support for various clinical conditions. Contraindicated for use in the presence of flammable anesthetics.
Regulatory Classification
Identification
A continuous ventilator (respirator) is a device intended to mechanically control or assist patient breathing by delivering a predetermined percentage of oxygen in the breathing gas. Adult, pediatric, and neonatal ventilators are included in this generic type of device.
Predicate Devices
Puritan Bennett Corp. 840 Ventilator System (K970460)
Puritan Bennett Corp. 7200 Series Ventilator (K902506B)
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# 12984535
## SUMMARY OF SAFETY AND EFFECTIVENESS
### DEC 28 1998
| SUBMITTER: | Puritan-Bennett Corp.,<br>A subsidiary of Mallinckrodt Inc. |
|-------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| DATE: | December 10, 1998 |
| COMMON NAME: | Continuous Ventilator |
| PROPRIETARY NAME: | 840 Ventilator System with BiLevel Option |
| CONTACT: | Ann-Marie Butler<br>Sr. Regulatory Affairs Project Mgr.<br>Puritan-Bennett Corp.<br>A subsidiary of Mallinckrodt Inc.<br>2200 Faraday Avenue<br>Carlsbad, CA 92008<br>US<br>Phone: (760) 603-5818<br>Fax: (760) 603-5901 |
Class II per 21 CFR 868.5895 CLASSIFICATION: Continuous Ventilator
#### PREDICATED DEVICES:
Puritan-Bennett Corp. is claiming substantial equivalence to the following three predicate medical devices:
| Predicate Device | 510(k) Number | Classification |
|-------------------------------------------------|---------------|-----------------------------------------------------------|
| Puritan Bennett Corp.<br>840 Ventilator System | K970460 | Class II,<br>Continuous Ventilator<br>per 21 CFR 868.5895 |
| Puritan Bennett Corp.<br>7200 Series Ventilator | K902506B | Class II,<br>Continuous Ventilator<br>per 21 CFR 868.5895 |
| Drager<br>Evita 4 Ventilator | K961687 | Class II,<br>Continuous Ventilator<br>per 21 CFR 868.5895 |
| Siemens<br>Servo 300 Ventilator | K902859 | Class II,<br>Continuous Ventilator<br>per 21 CFR 868.5895 |
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#### I) DEVICE DESCRIPTION:
The 840 Ventilator System is designed and manufactured by Puritan-Bennett Corp. in Carlsbad, California, a subsidiary of Mallinckrodt Inc.
The 840 Ventilator System is a Class II device, "Continuous Ventilator", per 21 CFR Part 868.5895. This device is designated a Class I Type B equipment per IEC 601-1.
The 840 Ventilator's gas delivery system consists of two proportional solenoid valves (PSOLs) and an active expiratory valve. Previosly cleared modes of ventilation include Assist Control (AC), Synchronized Intermittent Mandatory Ventilation (SIMV), and Spontaneous (SPONT). The 840 Ventilator System supplies mandatory or spontaneous breaths with a preset level of positive end expiratory pressure (PEEP), trigger sensitivity, and oxygen concentration. A mandatory breath can be pressure- or volume-controlled, except in the optional BiLevel mode, when it is always pressure-controlled. A spontaneous breath mode allows the patient inspiratory flows of up to 200 L/min, with or without pressure support.
The 840 Ventilator modification is the addition of two new features for this device, the BiLevel Option and Inspiratory Pause. The BiLevel mode and Inspiratory Pause features were developed under the BiLevel Option project by Puritan-Bennett Corp. facility in Carlsbad, CA following the established design control procedures. Manufacture implementation of BiLevel and Inspiratory Pause will also be conducted by the Puritan-Bennett Corp., Carlsbad, CA facility in the future.
The BiLevel Option and Inspiratory Pause features are implemented on the 840 Ventilator through additional functionality in software and by using the existing User Interface panel. "BiLevel" has been added as a mode choice in the touch screen MODE menu. The INSP PAUSE key on the user interface, is activated to perform the inspiratory pause function. The pneumatic design and the electrical circuitry (apart from the User Interface printed circuit board) has remained unchanged functionally.
Puritan-Bennett Corp. asserts that a) the intended use of the 840 Ventilator with BiLevel Option, as described in its labeling, has not changed from that of the cleared device, the 840 Ventilator, and b) the fundamental scientific technology of the 840 Ventilator with BiLevel Option has not changed from that of the 840 Ventilator. The device's intended use is the same as that for standard, currently marketed critical care ventilators. The device is a dualmicroprocessor controlled, critical care ventilator intended to provide continuous ventilation for infant, pediatric and adult patients who require either invasive ventilation or non-invasive ventilation (via face mask).
The BiLevel mode and Inspiratory Pause features are currently included in cleared predicate devices, providing justification for substantial equivalence.
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#### II. INTENDED USE:
Purpose and function of the 840 Ventilator System with BiLevel Option:
- · The device is intended to provide continuous ventilation to patient's requiring respiratory support.
- · This device is intended for a wide range of patients from infant to adult and for a wide variety of clinical conditions.
Intended patient population:
- · The intended patient population includes infant, pediatric, and adult patients (tidal volume 25 - 2500 mL) who require continuous respiratory support.
- Intended for patient who require either invasive or non-invasive ventilation. . Intended environment of use:
- The device is intended for use in hospitals and hospital type facilities which provide respiratory care for patients requiring respiratory support.
- · The device may be used for transport within a hospital and hospital type facility provided compressed gas is supplied.
- · The device is not to be used in the presence of flammable anesthetics.
- The device is intended for sale by or on the order of a physician only.
- · This device is intended for operation by trained and qualified clinicians only and is intended for servicing by trained and qualified persons only.
#### III. SUBSTANTIALEQUIVALENCE:
The intended use of the 840 Ventilator with BiLevel Option is the same as that for standard, currently marketed critical care ventilators. The materials and design of this device are similar to those of the predicate devices. The technical characteristics of the device modification do not introduce new questions regarding safety or effectiveness of critical care ventilators. Furthermore, the labeling associated with the 840 Ventilator with BiLevel Option provides similar information as the predicate devices.
Information provided in the Special 510(k) submission provides comparative predicate device information and describes development procedures which support the determination of substantial equivalence and assertion that the modified device is safe and effective for its intended use. Software design and development, (including verification and validation testing, test and software quality procedures) is conducted using FDA's Guidance for the Content of Premarket Submissions for Software contained in medical devices, dated May 29 1998, as a guidance and per internal company requirements.
In summary Puritan-Bennett Corp. has provided information that indicates the 840 Ventilator with BiLevel Option to be safe and effective. This device is considered to be substantially equivalent to currently marketed devices which have been previously cleared by FDA.
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Image /page/3/Picture/1 description: The image shows the seal of the Department of Health & Human Services (HHS) of the United States. The seal features an abstract image of an eagle with its wings spread, symbolizing protection and care. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" is arranged in a circular pattern around the eagle, indicating the department's name and country.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
DEC 28 1998
Ms. Ann-Marie Butler Puritan-Bennett Corp. Bennett Group 2200 Faraday Avenue Carlsbad, CA 92008
Re: K984535 840 Ventilator System with BiLevel Option Requlatory Class: II (two) Product Code: 73 CBK December 10, 1998 Dated: December 21, 1998 Received:
Dear Ms. Butler:
We have reviewed your Section 510(k) notification of intent to market the device referenced above and we have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act). You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration.
If your device is classified (see above) into either class II (Special Controls) or class III (Premarket Approval), it may be subject to such additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 895. A substantially equivalent determination assumes compliance with the Current Good Manufacturing Practice requirements, as set forth in the Quality System Regulation (QS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic QS inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP regulation may result in regulatory action. In addition, FDA may publish further announcements concerning your device in the Federal Register. Please note: this response to your premarket notification submission does not affect any obligation you might have under sections 531 through 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal laws or regulations.
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#### Page 2 - Ms. Ann-Marie Butler
This letter will allow you to begin marketing your device as described in your 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4648. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers Assistance at its toll-free number (800) 638-2041 or (301) 443-6597, or at its internet address "http://www.fda.qov/cdrh/dsma/dsmamain.html".
Sincerely yours,
Thomas J. Callahan
Thomas J. Gallahan, Director Division of Cardiovascular, Respiratory, and Neurological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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#### INDICATION FOR USE
| 510(k) Number: | K984535 |
|----------------|---------|
|----------------|---------|
840 Ventilator System with BiLevel Option Device Name:
The 840 Ventilator System with BiLevel Option is used to Indication for Use: provide continuous ventilation to patient's requiring respiratory support. This device is used for a wide range of patients from infant to adult and for a wide variety of clinical conditions.
Prescription Use: Yes (Per 21 CFR 801.109)
Mark Kramer
(Division Sign-Off) Division of Cardiovascular, Respiratory, and Neurological Dev 510(k) Number
Two short videos show you everything — or skip straight to the written tutorial if you'd rather read. You can reopen this any time from the Tutorial button in the top bar.
Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
Use the checkboxes above the results to narrow: SaMD keeps only software-only devices, AI / ML keeps only devices with AI.
Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
Where do you find a device's intended use without opening the PDF?
Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
4. Device detail page: chat and citations
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
How do you verify an AI chat answer on the device detail page?
Click the citation bubbles to jump to the relevant highlight in the source document.
Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
6. Collections
With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
8. Chart view
Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.